Lin, L.-H., T.C. Onstott, and H. Dong. 2000. “Backscattered 39Ar Loss in Fine-Grained Minerals: Implications for 40Ar 39Ar Geochronology of Clay”. Geochimica Et Cosmochimica Acta 64: 3965-74. doi:10.1016/S0016-7037(00)00439-7. Reference Link
Lippmann, J., M. Stute, T. Torgersen, D.P. Moser, J.A. Hall, L. Lin, M. Borcsik, R.E.S. Bellamy, and T.C. Onstott. 2003. “Dating Ultra-Deep Mine Waters With Noble Gases and 36Cl, Witwatersrand Basin, South Africa”. Geochimica Et Cosmochimica Acta 67: 4597-4619. doi:10.1016/S0016-7037(03)00414-9. Reference Link
Borgonie, G., A. García-Moyano, D. Litthauer, W. Bert, A. Bester, E. van Heerden, C. Möller, M. Erasmus, and T.C. Onstott. 2011. “Nematoda from the Terrestrial Deep Subsurface of South Africa”. Nature 474: 79-82. doi:10.1038/nature09974. Reference Link